Thomas v



T. V.-ALLIS.

(No Model.)

METALLIC BARBED FENCING. No. 272,936. Patented Feb.27, 1883.

UNITED STATES PATENT OFFICE.

THOMAS V. ALLIS, OF NEW YORK, N. Y.

METALLIC BARBED FENCING.

sPEcIFICATloN forming part of Letters Patent No. 272,936, dated February27, 1883.

Application filed February 11, 1882.

(No model.)

To all whom it may concern Be it known that I, THOMAS V. ALLIs, of thecity and county of New York, State of New York, have invented a new anduseful Improvement in Metallic Barbed Fencing, of which the following isa full, clear, and exact description, reference being bad to theaccompanying drawings, making a part of this specification.

This invention consists of animproved con struction or manufacture ofribbed metallic strip blanks for barbed fencing, and barbed fencing rodsor strips made therefrom.

Theimprovements consist in forming metallic strips of approximatelyflattened or of elliptical or oval form in cross-section, (preferablyelliptical,) having longitudinal ribs along one or both sides,intermittent or at desired distances from each other, such ribs beingnarrower than the strips, and usually extending along the center of theflat or oval sides of the strips, and in forming the barbed fence stripor rod therefrom, as hereinafter more particularly specified.Thesestripsaregenerallyaboutonequarter of an inch in width and the ribsabout one-third the width of the strip. The size and width of the stripsand ribs may, however, be

varied from that above mentioned, if desired.

Figure 1 is a top view of my improved ribbed metallic strip-blank. Fig.2 is a side elevation of the same. Fig. 3 is a crosssection of the samethrough one of the ribs. Fig. 4. is a side elevation of the strip,showingthe ribs severed at each end. Fig. 5 is a top view of the barbedstrip after the ends of the ribs have been bent outward and the barbsformed. Fig. 6 is a side view of the same when twisted and completed.Fig. 7 is a view of a pairof rolls by which the ribbed strips may beformed.

The flattened or elliptical strip A, having longitudinal ribs B alongone or both of its sides, intermittent or at desired distances apartfrom each other, constitutes the ribbed strip of my invention. The ribsBusually taper slightly toward each end on their sides and top surface,one or both, for about one-third of their length, so that their ends,when severed from thestri p and bent away therefrom, will besomewhatpointed. These strips may be forged or made by any mechanism,but are most conveniently and cheaply made by the use of rolls, apair ofwhich suitable for such purpose are shown in Fig. 7. r

The ribbed strips or blanks A may be flat, or substantially so, exceptat the ribbed portion, but are preferably of elliptical form or outlinein cross-section. As the passes or grooves Z l in the rolls D D, to forman elliptical or oval strip, will be somewhat deepest at their centers,and the strips or blanks can be readily formed with such rolls fromround wire, as the wire will naturally, from the shape of the passes orgrooves in the rolls, keep a central position in the passes, a moreuniform ribbed strip willbe produced. The wire used should be of adiameter somewhat greater than the greatest vertical depth of thepasses, so as to furnish surplus metal to form the edges of the stripand the elevated or projecting ribs thereon.

To form the ribs B upon the surface or surfaces of the strip A separateand apart from each other, recesses 0, corresponding in length, width,depth, and form with the ribs desired, are cut in one roll, preferablythe lower one,

I), at the proper or determined distances from each other. 4 The blankswill thus be delivered from-the rolls D D in a continuous strip of theprescribed form, having the ribs Ben the side or sides thereof andintegral or solid therewith. The ribs B, it will be seen, are notcreased or narrowed at their base along the surface of the strips, asdescribed in another application made by me, but have the same breadthfor the whole of their depth. This construction or form of the ribssaves or renders unnecessary one passing of the strips through therolls. The ribbed strip A having been thus formed, the ends-one orboth-of the ribs are sheared or cut by any convenient mechanism, fromalong the sides of the strips, a suitable distance for the length of thebarbs, as shown at a, Fig. 4, usually about one-third the length of therib, and the cut portions or ends of the ribs are then bent, as shown atb,

Fig. 5, thus producing a fence-strip with barbs projecting therefrom.The ends of these ribs are preferably bent sidewise or laterally withrespect to the flattened surface of the strip,

rather than upward or at right angles thereto,

IOO

performed, as the former, against which they are bent, and which givesthe required curves at the base of the barb, can be more convenientlyapplied and used and the ends of the ribs more easily and rapidly bentthan if bent vertically upward. The ends of the ribs B are preferablybent in opposite directions, so as to form barbs on each side of thestrip; but they may be bent outward only in one direction in stead of inopposite directions, if for any reason desired. After the ends of theribs have been so bent to form the desired barbs the strips may betwisted, as shown in Fig. 6, and the rod is then ready for use. Aflattened or approximately flattened fence-strip is also more effectualas a fence than when the rod is round, as it has greater elasticity, ismore easily noticed by animals, and therefore more regarded by them.

What is claimed is 20' 1. A rolled metallic strip-blank, A, of flattenedor elliptical form in cross-section, provided at intervalswith flangesor fins projecting from the flattened or'wider face of the strip, andadapted to be partially severed therefrom 2 5 to form barbs,substantially as described.

2. A Wrought metallic barbed rod for fencin g, of flattened orelliptical form in cross-section, having barbs integral therewith on andprojecting from the flattened side or sides of 0 the rod, allsubstantially as set forth.

THOMAS V. ALLIS.

Witnesses SAMUEL LEA, S. NELsoN WHITE.

